package com.littleken.core.validate;

import com.littleken.core.config.SecurityProperties;
import lombok.Data;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.ServletRequestUtils;
import org.springframework.web.context.request.ServletWebRequest;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.Random;

@Data
public class ImageCodeGenerator implements ValidateCodeGenerator{

    @Autowired
    private SecurityProperties securityProperties; //配置类

    @Override
    public ImageCode generate(ServletWebRequest request) {
         /* int width = 67;
        int height = 23*/;
        int width = ServletRequestUtils.getIntParameter(request.getRequest(),"width",securityProperties.getCode().getImage().getWidth());
        int height =ServletRequestUtils.getIntParameter(request.getRequest(),"hight",securityProperties.getCode().getImage().getHight());
        BufferedImage image = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);

        Graphics g = image.getGraphics();
        Random random = new Random();

        g.setColor(getRandColeor(200,250));
        g.fillRect(0,0,width,height);
        g.setFont(new Font("Time New Roman",Font.ITALIC,20));
        g.setColor(getRandColeor(160,200));
        for (int i = 0; i < 155; i++) {
            int x = random.nextInt(width);
            int y = random.nextInt(height);
            int xl = random.nextInt(12);
            int yl = random.nextInt(12);
            g.drawLine(x,y,x + xl,y + yl);
        }

        String sRand = "";
        Integer num = securityProperties.getCode().getImage().getLength();
        Integer time = securityProperties.getCode().getImage().getExirtInt();
        if (num == null){
            num = 4;
        }
        if(time == null){
            time = 60;
        }
        for (int i = 0; i < num; i++) {
            String rand = String.valueOf(random.nextInt(10));
            sRand +=rand;
            g.setColor(new Color(20 + random.nextInt(110),20 + random.nextInt(100),20 + random.nextInt(110)));
            g.drawString(rand,13 * i + 6,16);
        }
        g.dispose();
        return new ImageCode(image,sRand,time);
    }

    /**
     * 随机生成干扰条纹
     * @param fc
     * @param bc
     * @return
     */
    private Color getRandColeor(int fc,int bc){
        Random random = new Random();
        if(fc > 255){
            fc = 255;
        }
        if (bc > 255){
            bc = 255;
        }
        int r = fc + random.nextInt(bc - fc);
        int g = fc + random.nextInt(bc - fc);
        int b = fc + random.nextInt(bc - fc);

        return new Color(r,g,b);

    }
}
